'68 289 Valve Clicking

[Clark Rodgers]

It sounds like your getting some good advice on how to check the adjustment by rotating and checking the rockers. I have one of those old shade tree ways of getting the job done. You just need an old set of valve covers that you don't mind cutting the top of them off. Just loosely install these and start the engine until it's warm and then go one by one and back off the adjustment nut till you here the valve ticking and then tighten 1/4 to 1/2 turn. This can be done without these covers but what a mess, usually you can find a set of old covers for next to nothing. I know it sounds a little strange but this really works and I'm sure thunderbolt's way will work too.
I know you would like a more precise way of doing this but I think the measurements they give you are only for intial setup's not the final adjustment.Hopefully someone will let both of us know.